18308-4358 DON 905 (HD 170309)
18h 30m 45.28s -43° 58' 16.7" P.A. 53.00 sep 0.5 mag 9.90,11.50 Sp K1/2III
| Coord 2000 |
18308-4358 |
|
Discov num |
DON 905 |
|
Comp |
|
|
Coord arcsec 2000 |
18 30 45.28 -43 58 16.7 |
|
| Date first |
1930 |
|
Date last |
1948 |
|
Obs |
2 |
|
| Pa first |
54 |
|
Pa last |
52.6 |
|
P.A. Now (θ) |
52.6° |
|
| Sep first |
0.4 |
|
Sep last |
0.46 |
|
Sep. Now (ρ) |
0.46" |
|
| Mag pri |
9.90 |
|
Mag sec |
11.50 |
|
delta mag (ΔM) |
1.6 |
|
Spectral class |
K1/2III (yellow-orange) |
|
| Pri motion ra |
+001 |
|
Sec motion ra |
|
|
| Pri motion dec |
-020 |
|
Sec motion dec |
|
|
| Notes |
|
|
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 170309 |
|
Constellation |
Corona Austrina |
|
Tycho2 |
7914-00415-1 |
|
Gaia DR2 |
6721766445518166528 |
|
| HD |
170309 |
|
